CVE-2026-62899

Public on 2026-08-11

Modified on 2026-08-13

Description

Inconsistent interpretation of http requests ('http request/response smuggling') in .NET allows an unauthorized attacker to bypass a security feature over a network.

Severity

Medium

See what this means

CVSS v3 Base Score

5.9

See breakdown

Affected Packages

Platform	Package	Release Date	Advisory	Status
Amazon Linux 2023	dotnet10.0	2026-08-31	ALAS2023-2026-2094	Fixed
Amazon Linux 2023	dotnet6.0			Not Affected
Amazon Linux 2023	dotnet8.0	2026-08-31	ALAS2023-2026-2095	Fixed
Amazon Linux 2023	dotnet9.0	2026-08-31	ALAS2023-2026-2096	Fixed

CVSS Scores

	Score Type	Score	Vector
Amazon Linux	CVSSv3	5.9	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

References

FAQs regarding Amazon Linux ALAS/CVE Severity Red Hat: CVE-2026-62899 Mitre: CVE-2026-62899